Yes, it's mainly needed for the Chancellor(and for me as the GM) though. I am sure it is save game compatible if someone don't have it but to minimize the difference between peoples game files it would be nice if everybody have it.
I will set up the Rules thread and will give the link to the mod as well. With it comes the EBBS script we will use. There are also EDU and EDB files wich allow us to recruit RBG's if needed. They are basically needed for the Chancellor and me only.
And yes, Private Funds are out of the game money you can use on various things. One of the most important ones is the ability to buy Private troops. You have to say what unit you want to recruit and it's recruitment cost will be taken from your Private funds. It's upkeep will also deducted from the Private funds. This means that the Royal Treasurer or the Chancellor must add the exact ammount of mnai to the in-game treasury to create a balance. Otherwise the kingdom would pay for the recruitment and upkeep of your private units.
You need the EBBS script from the PBM mod. I answered to Leo about FD.
Bookmarks